OH...shut my mouth...I thought that this lens was going to be a fisheye lens to take up the slack as Canon discontinued theirs? ....but this is a rectilinear lens with an exotic price to go along with it! I will just have to limp along with my mediocre-performning Canon 16-35mm f/2.8L II.... I would love to own the new Zeiss...but it is definitely not at the top of my wish list. (I have the Zeiss 21mm f/2.8 ZE Distagon T* which is a focal length I use much more often).